Structure 56 0369 · Riverside County, CA

Route 91 over Pierce Street

Carries Route 91 over Pierce Street, 08-riv-091-10.81-riv.

Overall conditionFair

Set by its lowest-rated component: Deck at 5 of 9.

How ratings work
Decksets the rating5/9 · Fair
Superstructure7/9 · Good
Substructure7/9 · Good
0 failed4 poor6 fair9 excellent

Elevation

Side view, colored by inspection rating
CAR · 15 FT91 FT OVERALL25 FT0ELEVATION · LENGTHS TO SCALE
Deck 5/9 · sets the ratingSuperstructure 7/9Substructure 7/9

91 ft end to end. Lengths and the car on the deck are drawn to the same scale. Each part is colored by its latest inspection rating. The inventory records lengths but not heights or the layout of the shorter spans, so those are drawn as typical for a box-beam bridge.

Built1961rebuilt 1973
Length90.9 ft27.7 m
Daily traffic219,000counted 2019
Last inspectedApril 2023every 24 months

Location

StateCalifornia
CountyRiverside
Location08-riv-091-10.81-riv
CarriesRoute 91
CrossesPierce Street
Coordinates33.89712, -117.49292

Physical Characteristics

MaterialConcrete
DesignBox Beam - Multiple
Total Length90.9 ft (27.7 m)
Max Span85.0 ft (25.9 m)
Deck Width135.8 ft (41.4 m)
Deck Area1146.8 sq m
Main Spans1
Year Built1961 (reconstructed 1973)

Traffic

Avg Daily Traffic219,000 (2019)
Truck Traffic10%
Lanes On Bridge8
Lanes Under Bridge5

Inspection & Ownership

Last InspectionApril 2023
Inspection FrequencyEvery 24 months
OwnerState Highway Agency
Historical SignificanceBridge is not eligible for the National Register
Scour CriticalNot applicable
Structure Number56 0369

How Bridge Ratings Work

Inspectors rate each major part of a bridge (the deck you drive on, the superstructure of beams that holds it up, and the substructure of piers and abutments beneath) on a 0–9 scale. A bridge's overall condition is its lowest of those ratings, so one deteriorated component makes the whole bridge "poor."

0Failed
1Imminent failure
2Critical
3Serious
4Poor
5Fair
6Satisfactory
7Good
8Very good
9Excellent
Good · lowest component 7–9
Fair · lowest component 5–6
Poor · lowest component 0–4

A poor rating is not a closure. It means the bridge is flagged for priority repair or replacement; bridges judged unsafe are closed or posted with weight limits. The waterway (channel) rating is reported, but it does not count toward the overall classification.

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